The ethmoid articulates with thirteen bones: 1  two bones of the neurocraniumâthe frontal, and the sphenoid (at the sphenoidal body and at the sphenoidal conchae). 2  eleven bones of the viscerocraniumâ, two nasal bones, two maxillae, two lacrimals, two palatines, two inferior nasal conchae, and the vomer.
Corn is a warm-season annual that is best planted after the soil temperature reaches 60Â°F, usually two or three weeks after the last frost in spring. Corn planted in cold, wet soil is unlikely to germinate. Corn grows best in air temperatures from 60Â° to 95Â°F.Corn can take from 60 to 100 days to reach harvest depending upon variety and the amount of heat during the growing season.orn seed germinates in 10 to 14 days at 75Â°F, but the rate of germination may reach only 75 percent. Start corn indoors 2 to 3 weeks before the last frost in spring for transplanting 2 to 3 weeks after the last frost. If your season is long enough, plant successive crops every two to three weeks. Planting and spacing.
Planting Sweet Corn. When planting sweet corn, you want to plant the seeds a half an inch deep in cool, moist soil, and at least one to one and a half inches deep in warm, dry soil. Corn plants need to be planted 12 inches apart and there should be at least 30 to 36 inches between rows.f you plant super sweet corn, you want to be sure the soil is at least 65 degrees F., as they prefer a warmer climate. The best way how to grow sweet corn is to plant an early variety near the beginning of the season, and then wait a couple weeks to plant another early variety and then plant a later variety.